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[PATCH v7 01/17] sysdeps/init_array: Add PREINIT_FUNCTION to crti.S
- From: Palmer Dabbelt <palmer at dabbelt dot com>
- To: libc-alpha at sourceware dot org, joseph at codesourcery dot com
- Cc: Palmer Dabbelt <palmer at dabbelt dot com>
- Date: Fri, 26 Jan 2018 19:57:28 -0800
- Subject: [PATCH v7 01/17] sysdeps/init_array: Add PREINIT_FUNCTION to crti.S
- Authentication-results: sourceware.org; auth=none
- References: <20180127035744.10058-1-palmer@dabbelt.com>
The RISC-V port contains a crti.S that simply contains a link to
PREINIT_FUNCTION (when defined). As this should be entirely generic,
Joseph Myers suggested that we update the generic init_array version to
contain this. Since RISC-V is the only user of init_array this won't
break any existing ports.
2018-01-26 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/init_array/crti.S (.section .init_array): Add
PREINIT_FUNCTION when defined.
---
sysdeps/init_array/crti.S | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/sysdeps/init_array/crti.S b/sysdeps/init_array/crti.S
index 0a6e9fd95338..145c918f939b 100644
--- a/sysdeps/init_array/crti.S
+++ b/sysdeps/init_array/crti.S
@@ -11,3 +11,17 @@
But new configurations without compatibility concerns for
toolchains without .init_array support can use this to avoid the
superfluous .init and .fini boilerplate code. */
+
+#ifdef PREINIT_FUNCTION
+
+#if PREINIT_FUNCTION_WEAK
+# error PREINIT_FUNCTION_WEAK is unsupported
+#endif
+
+/* This arranges for PREINIT_FUNCTION to be called upon loading a library that
+ contains crti.o. */
+
+ .section .init_array,"a",%init_array
+ .dc.a PREINIT_FUNCTION
+
+#endif
--
2.13.6